In this Stack Overflow answer, an editor changed my sentence:
Not as simply as that, unfortunately.
Not as simple as that, unfortunately.
The original question was:
Is there any way to get the following to work?
I used the adverb form because I wanted to convey ‘it is possible, although not in a manner as simple as the one described in your question’. I understand that the adjective form used by the editor is correct, but is the adverb form incorrect or unusual?